The beauty of MapReduce is in its elegant simplicity of use (once properly implemented) think of Unix shell commands like grep, sort, cut - simple functional to

The beauty of MapReduce is in its elegant simplicity of use (once properly implemented) think of Unix shell commands like grep, sort, cut - simple functional tools (as in functional languages - zero side effects), which do only one task but do it amazingly well, Google just added a new type of screwdriver to the toolbox.